Respiration monitoring equipment

• US 7,089,932 B2
• Filed: 06/19/2002
• Issued: 08/15/2006
• Est. Priority Date: 06/26/2001
• Status: Expired due to Term

• Current Assignee: Pippamed Limited
• Original Assignee: C-Lect Medical Limited
• Inventors: Dodds, Dennis
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): Fan, Hongmin
• Application Number:
  US10/482,535
• Publication Number:
  US 20040233058A1
• Time in Patent Office: 1,518 Days
• Field of Search: 340/606, 340/611, 340/539.12, 128/202.22, 128/205.23, 128/204.18, 128/204.23, 600/532, 600/538
• US Class Current: 128/202.22
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/0878 using temperature sensing means
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61B 5/682 Mouth, e.g., oral cavity; tongue; Lips; Teeth

Abstract

Respiration monitoring equipment comprises, in one embodiment, a medical face mask (2), adapted to be located adjacent, or to cover a patient'"'"'s nostrils and/or mouth; a transducer (7) adapted to be impinged by the patient'"'"'s inspired and/or expired breaths, being sensitive to the presence and/or absence of a respiratory air flow, and being capable of emitting electrical signals in accordance with the presence and/or absence of a respiratory air flow; and a monitoring unit (9) electrically connected to the transducer (7) and responsive to the presence and/or absence of signals emitted by the transducer (7), and including means of triggering at least an alarm signal in the circumstances of non-detection of respiratory air flow within one or more predetermined parameters. Another embodiment provides for “cordless” monitoring, with a transmitter unit (11) at the face mask (2) and a receiver (12) at the monitoring unit (9).

Claims

1. Respiration monitoring equipment comprising:

(i) a medical face mask adapted to cover a patient'"'"'s nostrils and mouth;

(ii) a transducer adapted to be impinged by the patient'"'"'s inspired and/or expired breaths, being sensitive to the presence and/or absence of a respiratory air flow, and being capable of emitting electrical signals in accordance with the presence and/or absence of a respiratory air flow,

(iii) a monitoring unit electrically connected to the transducer and responsive to the presence or absence of signals emitted by the transducer, and including means of triggering at least an alarm signal in the circumstances of non-detection of respiratory air flow within one or more predetermined parameters; and

(iv) an encoded connector between the face mask and the monitoring unit.

2. Equipment as claimed in claim 1, wherein the transducer is of a pyroelectric and piezoelectric polymer.

3. Equipment as claimed in claim 2, wherein the polymer is PVDF.

4. Equipment as claimed in claim 1, wherein the encoded connector comprises a resistor.

5. Equipment as claimed in claim 1, wherein the transducer is carried by the face mask.

6. Equipment as claimed in claim 1, wherein the face mask incorporates an adaptor collar comprising a socket, in which socket the transducer is at least in part, housed.

7. Equipment as claimed in claim 6, wherein the adaptor collar is of a synthetic material exhibiting elastomeric characteristics.

8. Equipment as claimed in claim 6, wherein the transducer is a push fit into the socket.

9. Equipment as claimed in claim 1, wherein an electrical lead extends from the transducer to the monitoring unit.

10. Equipment as claimed in claim 1, wherein the monitoring unit comprises means to provide a prescribed time period parameter.

11. Equipment as claimed in claim 1, wherein the monitoring unit comprises means to provide minimum and maximum air flow rate parameters.

12. Equipment as claimed in claim 1, wherein the monitoring unit also comprises means to emit a “

normal operation”

signal, when respiratory air flow within the predetermined parameter(s) is sensed by the transducer.

13. Respiration monitoring equipment comprising:

(i) a medical face mask adapted to cover a patient'"'"'s nostrils and mouth;

(ii) a transducer adapted to be impinged by the patient'"'"'s inspired and/or expired breaths, being sensitive to the presence and/or absence of a respiratory air flow, and being capable of emitting electrical signals in accordance with the presence and/or absence of a respiratory air flow,

(iii) a monitoring unit electrically connected to the transducer and responsive to the presence or absence of signals emitted by the transducer, and including means of triggering at least an alarm signal in the circumstances of non-detection of respiratory air flow within one or more predetermined parameters; and

(iv) an encoded connector comprising a resistor between the face mask and the monitoring unit.

14. Equipment as claimed in claim 13, wherein the transducer is of a pyroelectric and piezoelectric polymer.

15. Equipment as claimed in claim 14, wherein the polymer is PVDF.

16. Equipment as claimed in claim 13, wherein the transducer is carried by the face mask.

17. Equipment as claimed in claim 13, wherein the face mask incorporates an adaptor collar comprising a socket, in which socket the transducer is at least in part, housed.

18. Equipment as claimed in claim 17, wherein the adaptor collar is of a synthetic material exhibiting elastomeric characteristics.

19. Equipment as claimed in claim 17, wherein the transducer is a push fit into the socket.

20. Equipment as claimed in claim 13, wherein an electrical lead extends from the transducer to the monitoring unit.

21. Equipment as claimed in claim 13, wherein the monitoring unit comprises means to provide a prescribed time period parameter.

22. Equipment as claimed in claim 13, wherein the monitoring unit comprises means to provide minimum and maximum air flow rate parameters.

23. Equipment as claimed in claim 13, wherein the monitoring unit also comprises means to emit a “

normal operation”

signal, when respiratory air flow within the predetermined parameter(s) is sensed by the transducer.